Human Factor in System Design

Running head: HUMAN FACTOR IN SYSTEM DESIGN
Human Factor in System Design
Name of the Student
Name of the University
Author’s Note

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HUMAN FACTOR IN SYSTEM DESIGN
Table of Contents
Definition of interactive system and its users............................................................................2
Usability Evaluation Methodology............................................................................................3
Definition and description of evaluation procedure that is needed to be applied......................4
Collection of evidence about the usability of the system1750...................................................8
Findings about the usability of the system...............................................................................12
References................................................................................................................................17

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HUMAN FACTOR IN SYSTEM DESIGN
Definition of interactive system and its users
The interactive system is defined as the computer system that have a significant
interaction between the computers and the humans. As an example of graphical interactive
system are the operation system that are installed in the computers. The application software
such as CAD, data entry systems, simulation software requires high level interaction of the
user with the system. The IDEs and the web browsers can also be considered as an example
of the interaction system (Preece, Rogers and Sharp 2015). About 90 percent of the effort in
development of the technology is given on enhancing the interface and improve the
interaction of the user with the developed system.
The preference of the people and the feature that can attract more number of people
should be understood for the development of the interface of the system. There is a need to
analyse the needs of the user for the development of the interface and align the interface with
the developed system. The construction of the unambiguous icons needs to understand and
the common errors that are the part of the usability of the system should also be identified for
the development of an interactive system (Card 2017). Previously command line interface
was used as an interactive system that have a controlled interaction between the computer and
the user. In the command line interface the user using the system needs efficient knowledge
about the commands or the arguments for getting the desired output. The data is needed to be
inputted in the system in a sequential manner. There was a limitation for getting the output
but currently there is a development with the generation of agents and the virtual system and
different types of system such as direct manipulation system and embedded systems has been
developed for the improvement of the interaction and get the maximum output from the
system (Lazar, Feng and Hochheiser 2017).

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HUMAN FACTOR IN SYSTEM DESIGN
Usability Evaluation Methodology
For the evaluation of the usability of a system information should be gathered using
different types of methodology for gathering user feedback about the website created or the
site that is planned to create. There are different usability evaluation methodology that can be
applied and are given below:
Usability test result reporting – The results of the usability testing should be prepared
by focusing on the recommendation and findings that can be differentiated with the severity
level (Grenha Teixeira et al. 2017). The pertinent information obtained from the test planning
should be enough for methodology.
Test participant recruitment – Participants should be recruited those are expected to
use the website or have precious experience of using similar type of sites. The participants
should be dependent on the product or the site and there can be a multiple potential groups or
users (Roedl, Odom and Blevis 2018). Each of the group should have representatives for
optimizing the test performance.
Usability test planning – It is one of the essential factor and a test plan is needed to be
created for proceeding with the testing.
First click test – In this test the components of the interface that is clicked first by the
user for the completion of the intended task. For proceeding with the testing a prototype of
the website, wireframe or the functional website can be used.
System usability scale – It is considered as a reliable tool that measures the usability
and it mainly consists of a set of 10 questions in the questionnaires. Five response is taken
from the users with the different options that ranges from strongly agree to strongly disagree.

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HUMAN FACTOR IN SYSTEM DESIGN
Expert review and heuristic evaluation – In this method the site is reviewed by the
expert and compared with the principles of acceptance of the usability (Woods 2018). The
result of this type of analysis is identification of the potential issues in the system.
Definition and description of evaluation procedure that is needed to be
applied
The main focus for the evaluation of the usability is the identification of the
satisfaction level of the user using the system. Information is gathered for the identification of
the level of satisfaction using different methods such as gathering feedback from the users
about the existing sites and the plan site. The usability is also termed as the identification of
the quality of the experience that the user gains while interacting with the system or the
product i.e. application, software or websites (Fidas et al. 2015). The effectiveness,
satisfaction and the efficiency is the main components that are evaluated for the identification
of the usability of the developed information system. For the evaluation of the usability it
should be noted that the usability is not a single property but it is a combination of different
factors i.e. intuitive design, efficiency of usage, frequency of error, learning ease,
memorability and subjective satisfaction (Abdelnour-Nocera et al. 2015). There are different
evaluation methodology that can be used for the analysis of the usability for the user centred
design and with the use of the methodology an assistant can be used for developing the visual
design, architecture, user satisfaction and interaction design.
There are different opportunities for performing the test and it includes the usability
testing for the baseline of an existing site, focusing on a targeted group of people for
interviewing them for the establishment of the goals of the users. The application of the card
slot testing can help the IA development. Navigation is used for the development of the
wireframe and it is tested for analysing the satisfaction level of the users (Bunch et al. 2015).

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HUMAN FACTOR IN SYSTEM DESIGN
The control design and the work design should be created for facilitating the design and
spatial awareness should be used for solving different problems faced during the development
of the interface design of the system. The evaluation of the interface design should be based
on the two different types of data such as qualitative and quantitative (Glas, Kanda and
Ishiguro 2016). On gathering the data from the system and the user the usability of the
website can be evaluated and recommendation regarding the improvement of the system can
be provided. The recommendations are implemented and tested for measuring the
effectiveness of the changes made for aligning the requirement of the user with the developed
interface.
A quality framework can be used for the evaluation of the usability and it mainly
focuses on the needs of the usability practitioners for accepting and adapting the
methodology. The information system is evaluated for the measurement of the attributes of
user acceptance, usability, functionality, efficiency and reliability of the developed system
(Endsley 2016). The usability evaluation is used for the identification of the error rate,
efficiency, satisfaction and learnability of the system. International standards should be used
that complies with the different rules of usability and the communication should be evaluated
with the application of different standardization. It has been identified that the following are
the five standards of ISO that are used for addressing the usability are listed below:
ISO /IEC 9126 (2000) – It is used for the analysis of the product quality and act as a
quality model.
ISO / IEC 4598 (1999) – It provides a general overview for the evaluation of the
software product.